AS far as why hunt an elephant or giraffe? I know for myself an elephant would be an extreme thrill... one that takes skill, patience, endurance, more than a bit of luck and a very good dose of danger. AND my participation in hunting is proven to improve elephant numbers and herd health, improve animal habitat..and overall, be better for the environment.
Plus.. many of the poachers are often local farmers that have absolutely no lover for elephants.. that eat their crops.. bust their fences, flatten houses, and ruin water supplies. \
That's why sport hunting has been so helpful in curbing local poaching and in improving elephant herds. With sport hunting, now the animal has a value to the local farmer. Now they have tourism dollars, meat, so on and so forth.. that makes the elephant valuable instead of simply a nuisance.
If the world community was smart.. they would allow ivory taken from licensed kills to be sold.. undercutting the black market and reducing the money from poaching. but emotions and stupidity are in great supply versus common sense..
it's not a very good idea to replace science with personal emotions..